Ice age | Shuipan Line | Jiuzun Line | |||
Ice diameter (mm) | Density (g/cm3) (Observation) | Ice accretion type | Ice diameter (mm) | Ice accretion type | |
1967 | 300 |
| Smog type | 200 | Smog type |
1968 | 300 |
| Smog type |
|
|
1969 |
|
|
| 280 | Smog type |
1970 | 380 | 0.34 | Smog type |
|
|
1971 | 380 |
| Smog type |
|
|
1974 | 240 | 0.5 | Smog type | 100 | Rain type |
1975 | 200 |
| Smog type |
|
|
1977 | 130 |
| Smog type |
|
|
1980 | 230 |
| Smog type |
|
|
1981 |
|
| Smog type | 180 | Smog type |
1984 | 400 |
| Smog type | 210 | Smog type |
1989 | 260 |
|
|
|
|